<template>
  <div>
    <quilleditor v-model="content"
                 ref="myTextEditor"
                 :options="editorOption"
                 @change="onChange">
      <div id="toolbar" slot="toolbar">
        <select class="ql-size">
          <option value="small"></option>
          <!-- Note a missing, thus falsy value, is used to reset to default -->
          <option selected></option>
          <option value="large"></option>
          <option value="huge"></option>
        </select>
        <!-- Add subscript and superscript buttons -->
        <span class="ql-formats"><button class="ql-script" value="sub"></button></span>
        <span class="ql-formats"><button class="ql-script" value="super"></button>
          </button></span>
        <span class="ql-formats"><button type="button" class="ql-bold"></button></span>
        <span class="ql-formats"><button type="button" class="ql-italic"></button></span>
        <span class="ql-formats"><button type="button" class="ql-blockquote"></button></span>
        <span class="ql-formats"><button type="button" class="ql-list" value="ordered"></button></span>
        <span class="ql-formats"><button type="button" class="ql-list" value="bullet"></button></span>
        <span class="ql-formats"><button type="button" class="ql-link"></button></span>
        <span class="ql-formats">
        <button type="button" @click="imgClick" style="outline:none">
        <svg viewBox="0 0 18 18"> <rect class="ql-stroke" height="10" width="12" x="3" y="4"></rect> <circle
          class="ql-fill" cx="6" cy="7" r="1"></circle> <polyline class="ql-even ql-fill"
                                                                  points="5 12 5 11 7 9 8 10 11 7 13 9 13 12 5 12"></polyline> </svg>
        </button>
      </span>
        <span class="ql-formats"><button type="button" class="ql-video"></button></span>
      </div>
    </quilleditor>
  </div>
</template>
<script>
import 'quill/dist/quill.core.css'
import 'quill/dist/quill.snow.css'
import 'quill/dist/quill.bubble.css'

import {quillEditor} from 'vue-quill-editor'

export default {
  name: "v-editor",
  props: {
    value: {
      type: String
    },
    /*上传图片的地址*/
    uploadUrl: {
      type: String,
      default: '/'
    },
    /*上传图片的file控件name*/
    fileName: {
      type: String,
      default: 'file'
    },
    maxUploadSize: {
      type: Number,
      default: 1024 * 1024 * 500
    }
  },
  data() {
    return {
      content: '',
      editorOption: {
        modules: {
          toolbar: '#toolbar'
        }
      },
    }
  },
  methods: {
    onChange() {
      this.$emit('input', this.content)
    },
    /*选择上传图片切换*/
    onFileChange(e) {
      var fileInput = e.target;
      if (fileInput.files.length === 0) {
        return
      }
      this.editor.focus();
      if (fileInput.files[0].size > this.maxUploadSize) {
        this.$alert('图片不能大于500KB', '图片尺寸过大', {
          confirmButtonText: '确定',
          type: 'warning',
        })
      }
      var data = new FormData;
      data.append(this.fileName, fileInput.files[0]);
      this.$http.post(this.uploadUrl, data)
        .then(res => {
          if (res.data) {
            this.editor.insertEmbed(this.editor.getSelection().index, 'image', res.data)
          }
        })
    },
    /*点击上传图片按钮*/
    imgClick() {
      if (!this.uploadUrl) {
        console.log('no editor uploadUrl');
        return;
      }
      /*内存创建input file*/
      var input = document.createElement('input');
      input.type = 'file';
      input.name = this.fileName;
      input.accept = 'image/jpeg,image/png,image/jpg,image/gif';
      input.onchange = this.onFileChange;
      input.click()
    }
  },
  computed: {
    editor() {
      return this.$refs.myTextEditor.quill
    }
  },
  components: {
    'quilleditor': quillEditor
  },
  mounted() {
    this.content = this.value
  },
  watch: {
    'value'(newVal, oldVal) {
      if (this.editor) {
        if (newVal !== this.content) {
          this.content = newVal
        }
      }
    },
  }
}

</script>
